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1.发明授权
公开(公告)号：US4454470A
公开(公告)日：1984-06-12
申请号：US335377
申请日：1981-12-29
申请人： Fred H. Boettner , Loren H. Walker
发明人： Fred H. Boettner , Loren H. Walker
CPC分类号： G01R23/02
摘要： A scheme for measuring the frequency of an alternating current signal provides for the development of first and second values which are respectively representative of the time the alternating current signal exist in alternate half cycles; e.g., the period of a half cycle. The most recently developed of the first and second values is retained and continuously compared with the other value which is presently being developed to thus provide an output signal representative of the greater thereof. This output signal is indicative of the period and, hence by its reciprocal, a measure of the apparent instantaneous frequency of the alternating current signal.
摘要翻译： 用于测量交流信号的频率的方案提供了分别表示交替电流信号以交替半周期存在的时间的第一和第二值的发展; 例如，半周期的周期。 最近开发的第一和第二值被保留并且与目前正在开发的其他值持续比较，从而提供表示其较大值的输出信号。 该输出信号表示周期，并且因此表示其交替电流信号的视在瞬时频率的测量。
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2.发明授权
公开(公告)号：US4451770A
公开(公告)日：1984-05-29
申请号：US493405
申请日：1983-05-11
CPC分类号： H02P23/06 , G01R31/343
摘要： A scheme for determining the stator resistance of an alternating current motor includes the determination of the actual flux of the motor through the sensing of motor voltage and motor current. The motor current is also utilized to develop a signal representing the anticipated motor flux which will result from that current. These two flux signals are combined to develop a flux error signal, the polarity of which is determined by whether the motor is in the motoring or regenerative mode of operation, which in turn is integrated to give the signal representing the motor stator resistance. Additionally, when the motor changes mode of operation, there is provided a step function which assures a motor stator resistance value being used which insures control stability.
摘要翻译： 用于确定交流电动机的定子电阻的方案包括通过感测电动机电压和电动机电流来确定电动机的实际磁通量。 电动机电流也用于开发表示由该电流产生的预期电动机通量的信号。 这两个通量信号被组合以产生磁通误差信号，其极性由电动机是否处于电动或再生运行模式来确定，其又被积分以给出表示电动机定子电阻的信号。 此外，当电动机改变操作模式时，提供了确保使用的电机定子电阻值以确保控制稳定性的阶梯功能。
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公开(公告)号：US20130027238A1
公开(公告)日：2013-01-31
申请号：US13190016
申请日：2011-07-25
IPC分类号： H03M1/12
CPC分类号： G01R19/2503 , G01R19/22
摘要： Certain embodiments of the invention may include systems, methods, and apparatus for sensing AC voltage. According to an example embodiment of the invention, a method is provided for sensing AC voltage. The method includes providing a voltage sensing circuit in communication with an AC power source; rectifying an AC signal from the AC power source with rectifier circuitry of the voltage sensing circuit; applying a first voltage to an analog-to-digital (A-to-D) converter circuit, wherein the first voltage is across a second resistive element of a first half cycle voltage divider comprising a first resistive element and the second resistive element and in communication with a positive DC output of the rectifier circuitry; and analyzing the first digital voltage value and the second digital voltage value by a processor to determine a voltage of the AC power source.
摘要翻译： 本发明的某些实施例可以包括用于感测AC电压的系统，方法和装置。 根据本发明的示例性实施例，提供了一种用于感测AC电压的方法。 该方法包括提供与AC电源通信的电压感测电路; 利用所述电压检测电路的整流电路对来自所述交流电源的AC信号进行整流; 将第一电压施加到模数（A到D）转换器电路，其中所述第一电压跨过包括第一电阻元件和所述第二电阻元件的第一半周期分压器的第二电阻元件，并且在 与整流电路的正直流输出通信; 以及通过处理器分析所述第一数字电压值和所述第二数字电压值，以确定所述AC电源的电压。
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公开(公告)号：US08477057B2
公开(公告)日：2013-07-02
申请号：US13190016
申请日：2011-07-25
IPC分类号： H03M1/12
CPC分类号： G01R19/2503 , G01R19/22
摘要： Certain embodiments of the invention may include systems, methods, and apparatus for sensing AC voltage. According to an example embodiment of the invention, a method is provided for sensing AC voltage. The method includes providing a voltage sensing circuit in communication with an AC power source; rectifying an AC signal from the AC power source with rectifier circuitry of the voltage sensing circuit; applying a first voltage to an analog-to-digital (A-to-D) converter circuit, wherein the first voltage is across a second resistive element of a first half cycle voltage divider comprising a first resistive element and the second resistive element and in communication with a positive DC output of the rectifier circuitry; and analyzing the first digital voltage value and the second digital voltage value by a processor to determine a voltage of the AC power source.
摘要翻译： 本发明的某些实施例可以包括用于感测AC电压的系统，方法和装置。 根据本发明的示例性实施例，提供了一种用于感测AC电压的方法。 该方法包括提供与AC电源通信的电压感测电路; 利用所述电压检测电路的整流电路对来自所述交流电源的AC信号进行整流; 将第一电压施加到模数（A到D）转换器电路，其中所述第一电压跨过包括第一电阻元件和所述第二电阻元件的第一半周期分压器的第二电阻元件，并且在 与整流电路的正直流输出通信; 以及通过处理器分析所述第一数字电压值和所述第二数字电压值，以确定所述AC电源的电压。
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